Sight-feed oil-cup.



R. J. LEACH.

SIGHT FEED OIL CUP.

APPLICATION PILgD JUNI: 19, 1912.

1,044,062, y Patented NOV.12,1912.

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i 4To may concern:

It known that I, .RAYMOND JAco Lnnjoma'citizen of the United States, residing at Sgeiek'onk,v in the county of Bristol andI State .5 of -Massachusetts, have invented a new and useful Improvement in Sight-Feed Oil- Cups, of which'the following is a-speclfication.

My invention has reference to an improvement in', oil` cupsandmore particularly t-o anl improvement in sight `feed oil cups 'for two-cycle gas engines.

In'the usual construction of sight feed oil cups and when used on two-cycle gas'engines, the oilfeeds by gravity and the gas r pressure in the engine casing works back through thegoil duct into the oil cup and p revents the proper feeding of the oil from the cup, vthe gas being greater than the. weight of the oil', and, thisback pressure varies' in different vmakes and sizes of engines. l The object of my invention is to improve the construction wof a sight feed oil cup for two-cycle gas engines, whereby back pressure of the gases .from the engine casing v'into the oil cup is eliminated," and I accomplish this object by providing the oil cup with an automatic ball check `valve either above or below the sight feed, said valve having means for adjusting the s ame for varying pressures in different maires or sizes of engaies; f

A further object of my invention is to construct a sight feed oil cup for two-cycle gas engines wit-li a ball check valveso constructed t-hat the valve controls the oil feed and also prevents the gas pressure in the engine casing from entering the oil cup.

My invention consists in the peculiar and novel construction of for twocycle gas engines, said oil cup having details of construction as will be more fully set forth hereinafter and claimed.

Figure 1 is a vertical front View of m f improved oil `cup showing the combined oil feed valve, back pressure valve and sight feed tube above the sight feed glass. Fig. 2 .is a vertical sectional view taken on line 2. 2.` of Fig 1. Fig. 3 is an upperV end View of the cylindrical valve member. Fig. 4. is a side View of the cylindrical valve member,

Y and Fig. 5 is a vertical sectional ViewI4 simi'- ig. 2 of a modified form of oil cu ,v showingheback pressure valve below tlib lar to sight feed. l l

by virtue of the back pressure of feed member 28 has a sight feed oil cup' valve 38 operated from usual means not shown',

Inl thedrawings 7. indicates the top, 8

fthe glass cylinder and 9 the base forming i Specification ofvLette'rsPatent.' Y Patented NOV. 12, 19121. i v v.Application-filed June 19, 1912. Serial No. 704,658.

secured. The tube 10 has a vertical oil duct l1, and transverse oil ducts 12. 12. forming outlet ducts from the cup into the tube, at the bottom of the cup. The base 9 has a downward extension 13 externally screwfthreaded at the end 14, a vertical cylindrical vvalve chamber l5, a valve seat 16 at the intersection of the upper end of the valve chamber l5 and the lower end of'the oil duct 11,' a transverse screw-threaded hole 17 and a stop pin 18 extending into the valve chamber at the bottom. A cylindrical valve 1nember'19 is constructed to. have a chamber 15, a circular recess 20 and a transverse oil slot 21 in its upper end, a central vertical oil duct 22, terminating downward into an oil drip tube 23, and a round hole 24 in the side, asv shown in Figs. 2, 3, and 4. A ball valve 25 is centrallyl supported by the upper end of the valve member 19 in a position to engage with the valve seat 1G, the top pin 18 limiting the downward movement of the valve member. A thumb screw 26 having a cone shaped end 27 is screwed through the hole 17 in a position for the cone shaped end 27 to engage with the upper edge of the hole 24 in the valve member 19 as shown in Fig. 2. The sight an internally screwthrea'ded upperend 29 secured tothe end 14 of the'extension 13, a cylindrical chamber 30 with side openings 31.31 the usual sight feed glass cylinder 32, nut shaped portion 33 screw-threaded lower end 34 and vertical oil duct 35 which extends from the chamber 30 through the screw-threaded end 34, as shown in Fig. 1.

In the modified form v the base 9 has the usual drip tube 35 and valve seat 37. formed in the base, and a rod the cover, by the controls the flow of oil from the cup. In this form the back pressure valve mechanism is placed below` the sight feed glass 32 and its operation is independent of the oil feed. When in use the ball valve 25. is held centrally over the oil duct 22. and centrally under the valve seat 16. whereby back pressure of the gases close through the Vduct will act to instantly e renthe valveandi positively prevent t trance of sliding tit in the as shown'in Fig. 5

a gas or back pressure into the oil I valve 25.

cup. lThe valve is adjusted or closed by turning the thumb screw 26, the cone shaped able valve member in the valve chamber, an

oil *duct extending through the valve member, a ball valve supported centrally under the valve seat directly by 'the valve member, and auxiliary means co-acting with 4the valve member for adjusting the valve mem ber to adjust the ball valve relative to the valve sea 2. In a sight feed oil cup, anoil duct leading from the cup, a valve chamber below the oil duct, a valve seat at the intersection of the oilduct andthe valve chamber, a slidable valve member in the valve chamber, a drip tube on the -lower end of the valve member,.an oil duct-extending lthrough the valve'member and drip t-ube,

a ball valve 'supported centrally under theA valve seat by the valve member, and 'meansy for adjusting t-he valve member to adjust the ball valve relative to the valve seat.

3.'In -a sight feed oil cup, anpoil ductI leading from the cup, a downward extension' von the "cup, a valve chamber in the downward extensionfa valve seat` at the intersection of the oil'duct and the valve cham- 4. In a sight feed oil cup, an oilduotY leading downward from the cup proper, a downward extension ont-he' cup, a valve chamber in the downward extension, a valvev seat at the intersection ofthe oil duct and the valve chamber, a slidable valve member -in the valve chamber.l a drip tube -on the lower endof the valve member, said valve member having a hole 1n its side, a recess 1n itsv upper end, transverse oil slots extending throu h the recess and a central longitudinal oil duct extending from the recess through the4dripbertr-thumlrscrew having al cone shaped end and' screwthreaded through the wall of the downward extension in a position for the cone shaped end to engage with the upper edge of the hole in the side of the valve member and means for limiting the outward or downward movement of the valve member.

In testimony whereof, I have signed my name to' this specification in the presence of two subscribing witnesses.-

RAYMOND JACOBLEACH. I Witnesses:

C. PERRY Wnrrn, CHAs. H.

Copies ot thispatent may be obtained for ve cents each, byaddres'sing the Commissioner of Patents,

' Washington, D. C. 

